Vuam txoj kev
Thaum welding tuab-walled steel kav, thawj zaug ntxuav cov roj, xim, dej, xeb, thiab lwm yam los ntawm cov vuam sib txuas, thiab ces ua bevels raws li phab ntsa thickness. Rau cov tuab tuab, ua kom lub bevel loj dua, thiab rau cov nyias nyias, ua kom lub bevel me me (lub kaum sab xis), thiab tom qab ntawd kho lub bevel. Qhov sib txawv feem ntau yog 1-1.5 npaug ntawm txoj kab uas hla ntawm lub vuam pas nrig lossis hlau. Yog hais tias qhov zawj yog yuam kev qhib dav dua, nws tuaj yeem sab laug me dua. Muaj tsawg kawg yog peb qhov chaw rau qhov chaw vuam, thiab feem ntau plaub qhov chaw ua haujlwm zoo dua. Thaum vuam, koj yuav tsum tau welding ib nrab thiab ib nrab, nrog rau qhov pib taw tes txog ib centimeter dhau ntawm qhov taw tes hauv qab, kom cov sib koom ua ke tuaj yeem ua los ntawm sab nraud. Yog tias cov yeeb nkab steel phab ntsa yog tuab, nws yuav tsum tau muab tso rau, tsawg kawg yog ob txheej, thiab txheej thib ob tuaj yeem welded tsuas yog tom qab tag nrho lub voj voog ntawm ib txheej tau welded.
Txheej txheem khiav
Round raj → cua sov → tho → peb-yob cross dov, nruam dov los yog extrusion → raj tshem tawm → sizing (los yog txoj kab uas hla) → txias → straightening → hydraulic test (los yog flaw detection) → marking
Weld reinforcement
Thaum cov phab ntsa tuab ntawm cov yeeb nkab steel tsis ntau dua 12.5mm, qhov vuam qhov txuas tsis ntau dua 3.0mm; Thaum cov phab ntsa tuab ntawm cov yeeb nkab steel yog ntau dua 12.5mm, qhov vuam qhov txuas tsis ntau dua 3.5mm.
Curvature
Cov kav hlau uas muaj lub npe sab nraud ntawm qhov tsis muaj ntau tshaj 168.3mm yuav tsum ncaj los yog khoov raws li kev pom zoo ntawm tus neeg muag khoom thiab tus neeg yuav khoom;
Rau cov kav hlau uas muaj lub npe sab nraud loj dua 168.3mm, qhov kev khoov yuav tsum tsis txhob siab tshaj 0.2% ntawm tag nrho qhov ntev ntawm cov yeeb nkab steel.
Rau cov yeeb nkab steel nrog cov yeeb nkab kawg phab ntsa thickness ntau dua 4 hli, cov yeeb nkab kawg tuaj yeem ua tiav nrog lub bevel ntawm 30 degree +5 degree 0 degree, nrog lub hauv paus ntawm 1.6mm ± 0.8 hli, thiab cov yeeb nkab kawg txoj kab nqes tsawg dua los yog sib npaug li 5 hli.
